Improvement in recliiming-chairs



J. ROY.

RECLINING CHAIRS.

Nov.186 ,957. Patented Feb. 6, 1877.

- i I fv J/ RQQ mug/m I I wvmom ATTURNEYS.

N, PEI'ERS, PHOTO-LITHOGRAPMER, WASHINGTON, D 6..

' To all whom it may concern:

UNITED STATES PATENT OFFICE,

JOSEPH ROY, OF MONTREAL, QUEBEC, CANADA.

IMPROVEMENT IN RECLINING-CHAIRS.

Specification forming part of Letters Patent No. 186,957, dated February6,1877; application filed July 11, 1876.

Be it known that I, JOSEPH ROY, of Montreal, in the Province of Quebecand Dominion of Canada, have invented a new and Improved Ohair, of whichthe following is a specification In the accompanying drawing, Figure 1represents a side elevation, Fig. 2 a rear elevation, and Fig. 3 a planview, of my improved chair.

Similar letters of reference indicate corresponding parts.

My invention has reference to an adjustable chair for barbers, dentists,physicians,

and other uses, in which the seat and back may be readily adjusted toany suitable inclination, approaching a horizontal or vertical position,by a simple operating mechanism at the back of the chair; and theinvention consists of a seat hinged to the pivoted base-section, andraised or lowered by pivoted leverarms, that connect the base with theback, and set the same jointly with the seat and pivoted arms, by asuitable gear-wheel and screw mechanism, to any height or position.

. In the drawing, A represents the foot or base support of the chair,which is made strong enough, and with as many feet as may be required toprevent the tilting of the chair in whatever position the same may beturned. A base-frame, B, is pivoted to the upright posts of the foot A,so as to turn thereon in any required direction. The seat 0 is hinged tothe front end of base-frame B, and further secured to the same by alateral clamping device, O, that admits, when released from thebase-frame, the raising of the seat to any suitable angle of inclinationto the base-frame. The back D is pivoted to the seat, the arms E andsupports F of the same being also pivoted to each other and to the seatand back, to admit the joint adjustment of the seat and back, or theseparate adjustment of the back, when the seat is retained in horizontalposition by the looking or clamping device G. The rear end of thebase-frame B is connected by pivoted lever-arms G with the ends of alateral brace-piece, G that traverses up and down on a centrallongitudinal screw-bolt, H, turning in top and bottom bearings of theback D. The lever-arms G and brace-piece Gr are guided in their motionby the side pieces of the back of the chair and longitudinalguide-pieces G attached a short distance from the side pieces of theback.

, Traversing motion is imparted to the bracepiece G by means of abevel-pinion, a, keyed to the upper end of the screw-bolt H, and aconical gear-wheel, b, with hand-crank d, the gear-wheel turning inbearings of a supporting-frame, 0, attached to the top part of the back.By turning the gear-wheel b in either direction, the screw bolt isrevolved, and thereby the brace piece G and lever-arms Gr carried up ordown, as required, for setting the chairs.

The back assumes a vertical direction by moving the bracepiece indownward direction on the screw-bolt, and takes up a backwardinclineddirection by moving the brace piece and levers in upward direction onthe bolt. The adjusting gear-wheels are readily handled, as they are atconvenient height for being worked by the hand.

The seat 0 is provided with longitudinallysliding pieces I, that areconnected at the rear end by a lateral brace-piece, having a fixedscrew-nut, f, with a crank-screw, L, that turns in the same, and insuitable bearings at the front part of the seat. By turning the crankscrew in one direction, the sliding pieces I are moved forward, so as toform extensions of the seat at both sides. By turning the crank inopposite direction they are moved back into the seat-frame, and storedaway within the same.

Pivoted foot-rests g are applied to the front ends of the slide-piecesI, to be swung up when the same are extended from the seat. Thefoot-rests give the person occupying the chair a support in thedifferent positions to which the same is adjusted. The flexibleconnection of seat and back admits the adjustment, either of back alone,or of back and seat jointly, according as the person occupying the chairhas to assume a sitting or lying position, the required inclinationbeing readily imparted by the gear-wheel and lever mechanism of theback, so that the chair forms a convenient and not too expensive chairfor the purposes mentioned. Between the sliding foot-pieces is arrangeda sliding drawer, I, for the storage of difl'erent articles.

Having thus described my invention, Iclaim as new and desire to secureby Letters Patent 1. In an adjustable chair, the combination of apivoted base-frame with a hinged seatsection and a locking or clampingdevice, by which the seat may be locked to or released from thebase-frame, substantially as set forth.

2. In an adjustable chair, the combination of the pivoted base-frame andpivoted rear lever-arms with the hinged seat and swinging back and arms,and with an adjusting-screw and gear-wheel mechanism to adjust the seatand back jointly to any inclination, substantially in the manner and forthe purpose set forth.

2 lemon 3. The combination of the base -frame, hinged 'seat, andclamping 'device, with the swinging back, lever-arms, and adjustingmechanism to adjust the back whilethe seat is retained in horizontalposition, substantially as specified.

4. The combination of the swinging leverarms of the base-frame with theback section of the chair, having guide-pieces, and with the lateraltraversing piece, revolving screwbolt, pinion, and crank-wheel,substantially as set forth.

JOSEPH ROY.

Witnesses A. DUBORD, LoUIs LARIVE.

